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The Many-to-Many Relationship

The Many-to-Many Relationship. A sales form. The many-to-many relationship. Create a third entity to map an m:m relationship An associative entity The vertical bar on the crow's foot indicates that LINEITEM is identified by concatenating saleno and lineno. SALE. LINEITEM. ITEM. *saleno.

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Itemno item - PowerPoint PPT Presentation

The Many-to-Many Relationship